May 19, 2021 · Wikipedia, free Internet-based encyclopedia, started in 2001, that operates under an open-source management style. It is overseen by the nonprofit Wikimedia Foundation and is one of the most-visited sites on the Internet. It uses a collaborative software known as wiki for editing articles.
So far there have been five notable mass extinctions on Earth. A growing number of scientists argue that we’re now in the midst of a sixth. Postcards from the 6th Mass Extinction is a podcast hosted by John P. Rafferty that attempts to personalize extinction, emphasizing the survival challenges that familiar forms of life currently face, while at the same time considering the pivotal roles ...
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Elizabeth Warren, American legal scholar and politician... Kurt Warner. American football player. Kurt Warner, American professional gridiron football... Fred Astaire. American dancer and singer. Fred Astaire, American dancer onstage and in motion... Kris Kristofferson. American singer, songwriter, and actor.
Basketball, game played between two teams of five players each on a rectangular court, usually indoors. Each team tries to score by tossing the ball through the opponent’s goal, an elevated horizontal hoop and net called a basket. It is the only major sport strictly of U.S. origin.
Adolf Hitler, leader of the Nazi Party (from 1920/21) and chancellor and Fuhrer of Germany (1933–45). He was the leader of Germany during that country’s participation in World War II, and he oversaw the Nazi Party’s implementation of the Holocaust, which resulted in the deaths of millions of people.
Protein, highly complex substance that is present in all living organisms. Proteins are of great nutritional value and are directly involved in the chemical processes essential for life. Their importance was recognized in the early 19th century. Learn more about the structure and classification of proteins.
Nanoparticle, ultrafine unit with dimensions measured in nanometers. Nanoparticles exist in the natural world and are also created as a result of human activities. Because of their size, they have unique material characteristics, and manufactured nanoparticles have practical applications in a variety of areas.
Jun 22, 2021 · Jeff Bezos , byname of Jeffrey Preston Bezos, (born January 12, 1964, Albuquerque, New Mexico, U.S.), American entrepreneur who played a key role in the growth of e-commerce as the founder and chief executive officer of Amazon.com, Inc., an online merchant of books and later of a wide variety of products.
Jul 23, 2021 · Geographical and historical treatment of Mauritius, including maps and a survey of its people, economy, and government. Mauritius is an island country, part of the Mascarene Islands, off the eastern coast of Africa. Port Louis is the capital. Learn more about Mauritius here.